Sand-concentrator.



No. 777,176. PATENTED DEC. 18, 1904. E. S. BENNETT.

SAND CONGENTRATOR.

APPLIOATION FILED 0OT.17, 190s.

MODEL 2SHBETSSHEET 1.

EWCLJZZZJJ f No. 777,176. PATENTED DEC. 18, 1904.

E. S. BENNETT.

SAND GONCBNTRATOR.

APPLIOATION FILED 00T.17, 1903.

NOIMUDEL. J] I 2 SHEETS-BHBET 2.

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42% 17 36625 J jf/ /z 652? UNITED STATES Patented December 13, 1904.

PATENT OEEICE.

v ERASTUS S. BENNETT, OF NEW YORK, N. Y.

SAND-CONCENTRATOFI.

SPECIFICATION forming part of Letters Patent No. 777,176, dated December 13, 190d.

. Application filed October 17, 1908. Serial No. 177,454. (No model.)

To (all whmn it may concern:

Be it known that I, ERASTUS S. BENNETT, a citizen of the United States, residing at New York, State of New York, have invented certain new and useful Improvements in Sand- (Joncentrators, of which the following is a specification.

My invention relates more particularly to means for recovering'iron sand, iron ore, plati num, or other ores from the tailings-discharge of gold-saving apparatus or from other flow- 'ing material; and it comprises means located at the bottom of the tailings-discharge pipe or sluice-box adapted to separate the heavier particles of ore, iron sand, and, maybe, a small quantity of gold from the out-flowing water and tailings or other material and to deflect the same through another discharge independent from that from which the main body of tailings is delivered.

The invention includes a deflecting-plate arranged at the bottom of the discharge-pipe or sluice-box, the edge of which projects up across the path of the heavier particles of ore, iron sand, and the like, so as to obstruct their further passage with the water and tailings to the final discharge of the tailings, said deflector-plate being arranged adjacent a supplemental discharge through which the mate rial recovered from the tailings is delivered into a suitable receptacle.

The features and combination and arrangement of parts constituting my invention will be described hereinafter and pointed out in claims.

The invention is illustrated in the accompanying drawings, in which- Figure 1 is a view of a tailings-dischargc pipe in section, showing my invention associated therewith. Fig. 2 is a detail View sl1owing the invention in a different position from that illustrated in Fig. 1. Fig. 3 is a side View showing means of adjustment. Fig. 4: is a transverse sectional view on line a a of Fig. 1. Fig. 5 is a detail view. Fig. 6 is a perspective view illustrating the application of my invention to a sluice-box, and Fig. 7is a side view of a separating-tank with my invention attached thereto.

As shown in Fig. 7, the tailings from the separating-tank are discharged through a pipe 1, having an outlet at 2 for the water and sand. At or near the outlet end of the pipe I attach my improvement designed to recover from the tailings material particles of ore, iron sand, gold, if there be any in the tailings, and other ore which may be present.

For the attachment of my invention an open-' ing 3 is formed in the bottom of the dischargepipe and a plate or support 4, carrying my improvements, is attached to the pipe about the said opening. This plate has a dischargeopening 5 therein, about which extends a downwardly-directed nipple 6, to which a pipe 7 is connected, which extends to a suitable box or receptacle 8. The plate carries a deflector 9, pivotally supported thereon with its free end pointing in the opposite direction to the flow of the tailings.

The deflector-plate when in position to close the supplemental outlet 5, as shown in Fig. 2, has its upper surface practically flush with the lower inner surface of the discharge-pipe; but by raising this deflector-platc slightly its free end will extend across the path of any particles of ore, iron sand, or the like which are passing along upon or close to the bottom of the discharge-pipe, with the result that said particles will be deflected into the pipe 7 and deposited thereby into the box 8, as indicated in Fig. 7 In order to adjust this deflectorplate, its pivot-pin or axle 10 is extended out beyond the side of the nipple 6 and is provided with an arm 11, resting on a screw 12, passing through a lug 13 on the casting or plate. The deflector is pressed constantly downward by a spring; but by adjusting the screw 12 the deflecting-plate may be turned to elevate its free end to the degree desired to receive the particles of ore passing. along the bottom of the pipe or sluice-box, and by turning the screw in the opposite direction the deflectingplate will lower under the action of its spring.

In order to prevent clogging of the opening beneath the free edge of the deflector when raised by large lumps of sand or tailings material collecting at this point, I provide a guard in the form of a grating 15, riveted or otherwise secured to the plate 1, said grating or guard being of flexible material and having the free end of its bars orfingers resting upon the free edge of the deflector-plate. The bars of the grating are at such a distance apart as will allow the particles of ore to pass through, which are then caught by the deflector-plate and directed to the discharge-pipe 7. The guard or grating moves up and down with the deflector-plate, and it thus at all times guards the opening beneath the free edge of the said plate whether this be large or small.

As shown in Fig. 6, the invention is applicable to a sluice-box as well as to a tailingsdischarge pipe.

The spring above mentioned for holding the deflector to its seat or for pressing it downwardly is furnished by the comb or grating, which is made of spring material, and resting on the edge of the deflector tends constantly to force the same down.

The deflector has a flexible piece 14 secured thereto, which extends across the joint between the deflector and the edge of the opening.

As shown in the drawings, I employ a rotary separator at the left of the tank to take out the stones, &c.

I claim as my invention 1. In combination with a conduit for the material having a discharge-opening in its lower side, a deflector projecting into the conduit to direct ore particles to the discharge-opening and the grating or guard associated with the tailings or other material having a dischargeopening in its lower side, a deflector projecting into the conduit to direct the ore particles to the discharge-0pening, and a grating or guard associated with the said deflector, the said grating or guard resting on the free edge of the deflector and being adjustable therewith to cover the opening between the deflector and the conduit or to lie down against the conduit to leave the same unobstructed, substantially as described.

3. In combination with a conduit for the tailings or other material, having a dischargeopening in its lower side, a deflector pivoted at the said opening and a guard or grating secured at one end and having its other end resting on the free edge of the deflector to partake of the adjustment of the same, substantially as described.

In testimony whereof I aflix my signature in presence of two witnesses.

ERASTUS S. BENNETT.

Witnesses:

MYRON L. JUsTiN, J. R. ScoTT. 

